[Box Backup] Boxwin Client activity

Gary boxbackup@fluffy.co.uk
Wed, 20 Apr 2005 14:26:18 -0700 (PDT)


> The 0.09g is up on the server now for anyone who wants it. I am
> interested in the feedback from the group on amount of time say a 5GB
> file would take to diff - I understand the algorithm but how do you
> calculate the optimum timeout for diffing the file.

I patched up the Cygwin version to allow for unlimited-time file
diffing, and a keep-alive process in the meantime to keep an SSL
session/connection up. A pretty much randomly-modified 550MB file takes
about 15 minutes to diff completely, with, effectively, less than 10%
uploaded every time. If I cut down the diffing time by 1/3, the upload
goes to 30%, but that probably depends on the structure of a file in
question. If I stick to, say, a 300 second limit, almost the whole file
gets uploaded every time. The only way to find out is to experiment,
AFAIK.

Gary



		
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